It is mentioned in the same Tafsir that when they confined the Holy Prophet (S) in the valley of Abu Talib and a party besieged the defile so that none may supply them with food and clothing etc. and that no one should come out to procure goods, at that time the Almighty Allah supplied bounties better than the bounties of Manna and Salwa that was supplied to Bani Israel and through the prayers of the Prophet everything they desired was supplied from Paradise.
When they said that they were tired of this narrow place, the Prophet slashed to his left and right and said to the mountains: “Move away!” And they moved away and a wide field was seen between the pass, such that its edges were not visible. Then the Holy Prophet (S) gestured with his hands and the place became filled with fruits, vegetation and flowers.