Musannaf Ibn Abi Shaybah

Hazrat Hassan bin Atiyyah says that Hazrat Mu'adh, during prayer, would sometimes catch a flea, crush it with his hand to kill it, and then spit on it.

Hazrat Abdur Rahman bin Aswad narrates that Hazrat Umar bin Khattab used to kill lice during prayer to the extent that its blood would get on his hand.

Hazrat Saeed bin Musayyib was asked about seeing a louse during prayer, so he said: Shake it off and remove it.

Ibrahim was asked about seeing a louse during prayer, so he said: Bury it.

Ibrahim says that killing a louse during prayer is of no consequence.

Hazrat Malik bin Yukhamar narrates that I saw Mu'adh bin Jabal killing lice and fleas during prayer.

Abu Hamza reports that he asked Ibrahim, "If I feel a louse during prayer, what should I do?" He replied, "Bury it among the pebbles, for the earth has been made sufficient for both the living and the dead."

Hazrat Dahhak was asked about killing a louse during prayer, and he replied that there is no harm in it.

Hazrat Mujahid was asked about seeing a louse during prayer, so he said that there is no harm in removing it.

Hazrat Aamir was asked about seeing a louse during prayer, so he said: Remove it.

Hazrat Anas used to kill lice during prayer.