that a man from the people of Al-'Iraq asked Ibn 'Umar about the blood of a gnat that gets on the clothes. Ibn 'Umar said "Look at this one, he asks about the blood of a gnat while they killed the son of the Messenger of Allah ﷺ! And I heard the Messenger of Allah ﷺ said: 'Indeed Al-Hasan and Al-Husain - they are my two sweet basils in the world.'" (Using translation from Tirmidhī 3770)
عَنْ دَمِ الْبَعُوضِ؟ وَقَدْ قَتَلُوا ابْنَ رَسُولِ اللهِ ﷺ وَقَدْ سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ هُمَا رَيْحَانَتِي مِنَ الدُّنْيَا