The Encouragement to traverse upon the Path of Goodness
Ibn Zayd said,
فَلاَ اقتَحَمَ الْعَقَبَةَ
(But he has not attempted to pass on the path that is steep.) "This means, will he not traverse upon the path which contains salvation and good Then He explains this path by his saying,
(And what will make you know the path that is steep Freeing a neck, or giving food.)" Imam Ahmad recorded from Sa`id bin Marjanah that he heard Abu Hurayrah saying that the Messenger of Allah ﷺ said,
(Yet he did not make his way through the steep course. And what may let you know what the steep course is? ...90:11-12] '
The word 'aqabah means 'hill, high place or a steep road'. It also refers to a 'low area of land between two hills or mountains, that is, a valley'. 'Aqabah helps a man in saving himself when pursued by an enemy by ascending the summit of the mountain, or in escaping by descending into the valley. Here the word 'aqabah refers to obedience and devotion. Just as it saves man from an enemy, righteous deeds save man from the punishment of the Hereafter. The righteous deeds are as follows:
God has commanded man to scale two heights—one is to treat others with justice, and help them in their hour of need. The other is to have firm faith in God. When such belief enters the inner depths of a human being, it does not remain confined to his own thinking but rather makes him become communicative. He then attempts to lead others along the path of Truth which he himself has adopted.
Uthmani text of the Madinah mushaf (King Fahd Complex). Translation: Saheeh International. Tafsir via Quran.com.