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.
Sahih al-Bukhari Book 80, Hadith 35
← Previous Hadith Ibn `Abbas said, "Preach to the people once a week, and if you won't, then preach them twice, but if you want to preach more, then let it be three times (a week only), and do not make the people fed-up with this Qur'an. If you come to some people who are engaged in a talk, don't start interrupting their talk by preaching, lest you should cause them to be bored. You should rather keep quiet, and if they ask you, then preach to them at the time when they are eager to hear what you say. And avoid the use of rhymed prose in invocation for I noticed that Allah's Messenger (ﷺ) and his companions always avoided it."

Sahih al-Bukhari Book 80, Hadith 34 Next Hadith → Allah's Messenger (ﷺ) said, "None of you should say: 'O Allah, forgive me if You wish; O Allah, be merciful to me if You wish,' but he should always appeal to Allah with determination, for nobody can force Allah to do something against His Will."

Sahih al-Bukhari Book 80, Hadith 36