(31) باب فِي الْمَشِيئَةِ وَالإِرَادَةِ
Narrated `Abdullah bin `Umar:
The Prophet (ﷺ) besieged the people of Ta'if, but he did not conquer it. He said, "Tomorrow, if Allah will, we will return home. On this the Muslims said, "Then we return without conquering it?" He said, 'Then carry on fighting tomorrow." The next day many of them were injured. The Prophet (ﷺ) said, "If Allah will, we will return home tomorrow." It seemed that statement pleased them whereupon Allah's Apostle smiled.
Reference: Sahih al-Bukhari 7480
In-book reference: Book 97, Hadith 106
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 9, Book 93, Hadith 572