Narrator names are parsed automatically from the isnad; identity and biographical details are matched from rijal sources (Itqan narrator profiles, muslimscholars.info).

Hadiths in whose chain he appears

Narrated `Abdur Rahman bin Abza : A man came to `Umar bin Al-Khattab and said, "I became Junub but no water was available." `Ammar bin Yasir said to `Umar, "Do you remember that you and I (became Junub while both of us) were together on a journey and you didn't pray but I rolled myself on the ground and prayed? I informed the Prophet (ﷺ) about it and he said, 'It would have been sufficient for you to do like this.' The Prophet then stroked lightly the earth with his hands and then blew off the dust and passed his hands over his face and hands."
Narrated Sa`id bin `Abdur Rahman bin Abza: (on the authority of his father who said) `Ammar said so (the above Statement). And Shu`ba stroked lightly the earth with his hands and brought them close to his mouth (blew off the dust) and passed them over his face and then the backs of his hands. `Ammar said, "Ablution (meaning Tayammum here) is sufficient for a Muslim if water is not available."
Narrated `Abdur Rahman bin Abza: that while he was in the company of `Umar, `Ammar said to `Umar, "We were in a detachment and became Junub and I blew the dust off my hands (performed the rolling over the earth and prayed.)"
Narrated `Abdur Rahman bin Abza: `Ammar said to `Umar "I rolled myself in the dust and came to the Prophet (ﷺ) who said, 'Passing dusted hands over the face and the backs of the hands is sufficient for you.' "
Narrated `Ammar: As above.
Narrated `Ammar: The Prophet (ﷺ) stroked the earth with his hands and then passed them over his face and the backs of his hands (while demonstrating Tayammum).
Link 3 from the end of the chain
Abd al-Rabmin b. Abza narrated It on the authority of his father that a man came to 'Umar and said:I am (at times) affected by seminal emission but find no water. He ('Umar) told him not to say prayer. 'Ammar then said. Do you remember,0 Commander of the Faithful, when I and you were in a military detachment and we had had a seminal emission and did not find water (for taking bath) and you did not say prayer, but as for myself I rolled in dust and said prayer, and (when it was mentioned before) the Apostle (ﷺ) said: It was enough for you to strike the ground with your hands and then blow (the dust) and then wipe your face and palms. Umar said: 'Ammar, fear Allah. He said: If you so like, I would not narrate it. A hadith like this has been transmitted with the same chain of transmitters but for the words: 'Umar said: We hold you responsible for what you claim