Mishkat al-Masabih #113

Abu Nadra told how a companion of the Prophet called Abu ‘Abdallah was visited by his friends who found him weeping. They asked him what made him weep, and whether God’s messenger had not told him to clip some of his moustache and keep it like that till he met him. He replied, “Yes, but I heard God’s messenger say that God took a handful in His right hand and another in His left saying, ‘This is for this, and that is for that, and I do not care;’ and I do not know in which of the two handfuls I am.” Ahmad transmitted it.