When the faithful party, who were few under the command of Talut, faced their enemy, who were many under the command of Jalut,
قَالُواْ رَبَّنَآ أَفْرِغْ عَلَيْنَا صَبْرًا
(they invoked: "Our Lord! Pour forth on us patience...") meaning, send down patience on us from You.
وَثَبِّتْ أَقْدَامَنَا
(and set firm our feet) meaning, against the enemy and save us from running away and from feebleness,
وَانصُرْنَا عَلَى الْقَوْمِ الْكَـفِرِينَ
(and make us victorious over the disbelieving people.)
Allah said:
فَهَزَمُوهُم بِإِذْنِ اللَّهِ
(So they routed them by Allah's leave) meaning, they defeated and overwhelmed them by Allah's aid and support. Then,
Continue reading the tafsir of ayahs 250–252Ma'arif al-Qur'an
Mufti Muhammad Shafi
Since the affirmation of the prophethood of the noble Messenger of Allah is also a major objective of the Holy Qur'an, it has been so asserted as and when the occasion warrants. That he is correctly reporting the event (in verses 246-251), while he neither learnt it from someone nor heard it anywhere nor saw it, is a miracle which is a sound proof of his prophethood. Verse 252 here (and verse 253 which follows) demonstrate this proof.
It is being said here that these verses in which this event has been mentioned 'are the verses of Allah that We recite to you with all veracity' and this proves that you are certainly among the Messengers.'
Uthmani text of the Madinah mushaf (King Fahd Complex). Translation: Saheeh International. Tafsir via Quran.com.