al-Zuhri ابن شهاب الزهري‎, محمد بن مسلم · The Book on Virtues of Jihad

That he heard 'Umar bin Al-Khattab saying: "I heard the Messenger of Allah (ﷺ) saying: 'The martyrs are four: A believing man whose faith is good, he meets the enemy and proves faithful to Allah until he is killed. That is the one to whom the people will raise up their eyes like this on the Day of Judgement' and he raised his head until his Qalansuwah fell - I do not know if it was 'Umar's Qalansuwah or the…

That the Prophet (ﷺ) said: "There is nothing more beloved to Allah than two drops and two traces: A teardrop shed out of fear of Allah, and a drop of blood shed in Allah's cause. As for the two traces: A trace resulting in Allah's cause, and and a trace resulting from one of the duties that Allah made obligatory." This Hadith is Hasan Gharib.