That the Messenger of Allah ﷺ said, "A man who wept out of the fear of Allah shall not enter the Fire until the milk returns to the udder; and dust in the cause of Allah and the smoke of Hell shall not come together."  

قَالَ رَسُولُ اللَّهِ ﷺ لاَ يَلِجُ النَّارَ رَجُلٌ بَكَى مِنْ خَشْيَةِ اللَّهِ حَتَّى يَعُودَ اللَّبَنُ فِي الضَّرْعِ وَلاَ يَجْتَمِعُ غُبَارٌ فِي سَبِيلِ اللَّهِ وَدُخَانُ جَهَنَّمَ