Kaʿb ibn al-Khazraj ibn al-Hārith ibn al-Khazraj.

His kunyah was Abū Muḥammad, though some say Abū ʿAbd al-Raḥmān.

He was the orator of the Anṣār and one of the most eminent Companions of Muhammad ﷺ. Although he did not fight at Badr, he was present at Uḥud and at the Pledge of al-Riḍwān.

His mother was Hind al-Ṭāʾiyyah; others say she was Kabshah bint Wāqid ibn al-Iṭnaba.

His maternal siblings were ʿAbd Allāh ibn Rawāḥah and ʿAmrah bint Rawāḥah.

He married Jamīlah bint ʿAbd Allāh ibn Ubayy ibn Salūl, who bore him Muḥammad.

Ibn Isḥāq reports that the Messenger of Allah ﷺ established a bond of brotherhood between him and ʿAmmār, though others say the pairing was between ʿAmmār and Ḥudhayfah.

He had a resonant voice and was an eloquent speaker.

Al-Anṣārī related: Ḥumayd told me, from Anas, who said:

‘When the Messenger of Allah ﷺ arrived in Medina, Thābit ibn Qays addressed him, declaring, “We will protect you as we protect our own lives and children; what, then, will be ours?” He replied, “Paradise.” They answered, “We are satisfied.” (1)’

Mālik and others transmit from Ibn Shihāb, from Ismāʿīl ibn Muḥammad ibn Thābit ibn Qays:

‘Thābit ibn Qays said, “O Messenger of Allah, I fear that I may be ruined. Allah forbids us to love being praised for what we have not done, yet I find that I love praise; and Allah forbids us from—”’