(21) باب لِيَعْزِمِ الْمَسْأَلَةَ، فَإِنَّهُ لاَ مُكْرِهَ لَهُ
Narrated Anas:
Allah's Messenger (ﷺ) said, "When anyone of you appeal to Allah for something, he should ask with determination and should not say, 'O Allah, if You wish, give me.', for nobody can force Allah to do something against His Will.
Reference: Sahih al-Bukhari 6338
In-book reference: Book 80, Hadith 35
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 8, Book 75, Hadith 350