Be careful when making promises and only do so if you are sure you can fulfill them. Be generous with your wealth and don't hoard it like a miser.

This hadith is about making vows and their effects. It was narrated by Sa'id bin Al-Harith that he heard Ibn 'Umar asking if people were forbidden to make vows. The Prophet replied that making a vow does not hasten or delay anything, but it can help to take out some of the wealth from a miser. This hadith teaches us that we should be careful when making promises and should only do so if we are sure we can fulfill them. We should also be generous with our wealth and not hoard it like a miser, as this will lead us away from Allah's mercy.