Hadith #1695 (Sahih Muslim)
Book: The Book of Prayer - Travellers
Narrator(s): Abu Jamra Ad-Dabi
Grade: Sahih

I heard Ibn ‘Abbas saying that the Messenger of Allah (ﷺ) observed thirteen rak’ahs at night.

Source: https://parallelquran.com/hadith/sahih-muslim-1695/

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Hadith #2897 (Sahih Muslim)
Book: The Book of Pilgrimage
Narrator(s): Abu Jamra Ad-Dabi
Grade: Sahih

I performed Tamattu’ but the people dis- couraged me to do so. I came to Ibn ‘Abbas and asked him about it. He ordered me to do so. I came to the House (Ka’ba) and slept. I saw a visitant in the dream who said: ‘Umra is acceptable and so is the Hajj performed for God’s sake. I came to Ibn Abbas and informed him about that Which I saw in the dream whereupon he said: Allah is the Greatest, Allah is the Greatest This is the Sunnah of Abu’l-Qasim (the Holy Pro- phet) (ﷺ).

Source: https://parallelquran.com/hadith/sahih-muslim-2897/