Musannaf Ibn Abi Shaybah

Hazrat Salman narrates that Hazrat Ibn Sirin would sometimes spit and then ask someone, "Look, has its color changed?" If the color had changed, he would spit a second time. If the color had changed a third time as well, he would perform ablution; but if the color had not changed the third time, he would not perform ablution.

Hasan, regarding the person who spits and there is yellowness in his spit, used to say that his ablution will not be invalidated until pure fresh blood comes out.

Hasan, regarding the person who spits and there is yellowness in his saliva, used to say that his ablution will not be invalidated until pure fresh blood comes out.

Ibrahim (regarding the person who spits and finds blood in his saliva) says that if the whiteness is predominant, his ablution is nullified, and if the redness is predominant, his ablution is not nullified.

Hazrat Muhammad bin Abdullah narrates that once Hazrat Salim spat and it was red blood. He called for water, rinsed his mouth, and entered the mosque without performing ablution.

Hazrat Ata bin Saib narrates that Hazrat Ibn Abi Awfa spat blood during the prayer but continued to pray.

Hazrat Hammad (regarding the person who sees yellowness in his saliva while in the state of ablution) says that nothing happens because of this, however, if it is flowing blood, then the ablution will be broken.

Hazrat Salim and Hazrat Qasim say regarding the yellowness of saliva that leave that which puts you in doubt and hold on to that which does not put you in doubt.

Hazrat Aamir says regarding the yellowness of saliva that there is no harm in it.

Hazrat Harith Akli (regarding the person who spits and there is a trace of blood in his saliva) says that if the blood dominates the saliva, then the ablution is broken.

Hazrat Qatadah says that if blood overcomes saliva, then perform ablution (wudu).