سنن النسائي

It was narrated that Abu Al-'Ajfa' said: "Umar bin Al-Khattab said: 'Do not go to extremes with regard to the dowries of women, for if that were a sign of honor and dignity in this world, or a sign of piety before Allah, the Mighty and Sublime, then Muhammad would have done that before you. But he did not give any of his wives, and none of his daughters were given, more than twelve Uqiyyah. A man may increase the dowry until he feels resentment against her and says: You cost me everything I own ('Alaqul-Qirbah)'" "And I was a man born among the 'Arabs, but I did not know the meaning of 'Alaqul-Qirbah' and others of you are saying -about those killed in this or that battle of yours, or who died: 'So-and-so was martyred' or 'so and so died as a martyr.' While perhaps he merely overloaded the backside of his beast, or lined his saddle with gold or silver seeking trade. So do not say that, rather say as the Prophet (ﷺ) said: 'Whoever is killed in the cause of Allah, or dies, then he is in Paradise.'"