question #2 Sahih Muslim 1238a, Book 15, Hadith 213 : How can differing opinions among scholars be addressed in Islamic jurisprudence?

I asked Ibn Abbas (Allah be pleased with them) about Tamattu’ in Hajj and he permitted it, whereas Ibn Zubair had forbidden it. He (Ibn ‘Abbas) said: This is the mother of Ibn Zubair who states that Allah’s Messenger (ﷺ) had permitted it, so you better go to her and ask her about it. He (Muslim al-Qurri said): So we went to her and she was a bulky blind lady and she said: Verily Allah’s Messenger (ﷺ) permitted it.