Allah narrates to us that His Prophet Ya`qub said to his children, in response to their request that he send Yusuf with them to the desert to tend their cattle,
إِنِّى لَيَحْزُنُنِى أَن تَذْهَبُواْ بِهِ
(Truly, it saddens me that you should take him away.) He said that it was hard on him that he be separated from Yusuf for the duration of their trip, until they came back. This demonstrates the deep love that Ya`qub had for his son, because he saw in Yusuf great goodness and exalted qualities with regards to conduct and physical attractiveness associated with the rank of prophethood. May Allah's peace and blessings be on him. Prophet Ya`qub's statement next,
(I fear lest a wolf should devour him, while you are careless of him.) He said to them, `I fear that you might be careless with him while you are tending the cattle and shooting, then a wolf might come and eat him while you are unaware.' They heard these words from his mouth and used them in their response for what they did afterwards. They also gave a spontaneous reply for their father's statement, saying,
(If a wolf devours him, while we are an `Usbah, then surely, we are the losers.) They said, `If a wolf should attack and devour him while we are all around him in a strong group, then indeed we are the losers and weak.'
Ma'arif al-Qur'an
Mufti Muhammad Shafi
When the brothers of Sayyidna Yusuf (علیہ السلام) requested their father that he should send Yusuf with them on a recreational outing, Sayyidna Ya'qub (علیہ السلام) told them that he did not favour sending him out for two reasons: (1) He remains uncomfortable without him in sight and (2) he apprehends that, in the wilderness out there, it might so happen that they become neglectful at some time and a wolf might eat him up.
The apprehension of Sayyidna Ya'qub may have been caused either due to the abundance of wolves in Canaan, or because he had seen in a dream that he is standing on top of a hill and Sayyidna Yusuf (علیہ السلام) is there on the slope downhill. All of a sudden ten wolves surround him and try to attack him. But, one of the wolves came forward to rescue him from the rest. Once released, Sayyidna Yusuf علیہ السلام took refuge inside the terrain.
The interpretation of that dream manifested later when it turned out that the ten wolves were these ten brothers and the wolf which defended Sayyidna Yusuf (علیہ السلام) and saved him from being killed was his elder brother, Yahuda (Judah). And the depth of the pit was the interpretation of his hiding under the land.
In a narration from Sayyidna ` Abdullah ibn ` Abbas ؓ ، it has been reported that Sayyidna Ya` qub (علیہ السلام) ، because of this dream, felt the danger of an unfortunate situation coming at the hands of these brothers. Thus, in fact, they were the ones he had alluded to as wolves - but, in consideration of his wisdom, he did not lay the truth bare. (Qurtubi)
Tazkirul Quran
Maulana Wahiduddin KhanOn ayahs 10–13
In the course of the last days of the Prophet Muhammad in Makkah, when Abu Talib and Khadijah had passed away, the people of Makkah intensified their opposition to him. In that period, some Makkans asked him about Joseph, whose name they had heard from some Jews during their travels. They asked him this question just to ridicule him, but God Almighty turned the thrust of this question against the interrogators themselves. By means of this story they were indirectly informed that they were treading in the footsteps of Joseph’s stepbrothers, while by the Grace of God, the prophet’s future would be like that of Joseph in Egypt. Jacob could see that among his children Joseph was the ablest and most pious. In him he could see the personality of a future prophet. For this reason, he was very much attached to Joseph. But his other ten sons looked at the matter from the worldly point of view. They thought that the most important in the eyes of their father should have been their collective group, because only that was capable of helping and supporting the family. In ancient tribal times the number (particularly male) of family members was of the utmost importance in defending and supporting the family. This one-sided view of theirs assumed such proportions that they thought that if they removed Joseph from the scene, they would have their father’s undivided attention. When they sat together to devise plans against Joseph, one of his brothers proposed that instead of killing Joseph, he should be pushed into some dry well. This was a special plan of God Almighty. It is the way of God, when a group is bent upon oppressing someone unjustly, that He makes them adopt such a moderate course as may open up new possibilities for their victim.