الكافي- ط الاسلامية, volume 3, page 60

9. Ali ibn Muhammad has narrated from Sahl ibn Ziyad from Muhammad ibn al-Rayyan who has said the following: “I once wrote to the man (a.s.), asking, ‘Is the blood of bugs like the blood of fleas? Is it permissible for one to consider blood of bugs like that of fleas, perform Salah (prayer) with it and analogize to act upon such analogy?’ He (the Imam) wrote with his signature, ‘It is permissible to perform Salah (prayer) with it, but washing is better.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

1. Ali ibn Ibrahim has narrated from his father from Hammad ibn ‘Isa from Hariz from Muhammad from whom he has mentioned who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘If a dog pollutes your clothes, and if it is dry, just pour water on your clothes; but if it is wet, then wash them clean.”’

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

2. Hammad ibn ‘Isa has narrated from Hariz from Muhammad ibn Muslim who has said the following: “I once asked abu ‘Abd Allah (a.s.), about a man whose body is polluted because of a dog. He (the Imam) said, ‘He must wash clean the area which has come in contact with a dog.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

3. Muhammad ibn Yahya has narrated from al-‘Amrakiy ibn Ali al-Naysaburiy from Ali ibn Ja‘far from his brother, Musa (a.s.), has said the following: “I once asked him (the Imam) (a.s.), about a mouse that has fallen in water and then walks on clothes. Can one perform Salah (prayer) in such clothes? He (the Imam) said, ‘Wash to clean the marks that you find and what you do not find just pour water on them.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

4. Ali ibn Ibrahim has narrated from Muhammad ibn ‘Isa from Yunus from certain persons of his people who has said the following: “I once asked abu ‘Abd Allah (a.s.), if it is permissible to touch a fox, jackal or such other beasts dead or alive. He (the Imam) said, ‘It is not harmful but he must wash his hand.’”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.