The textbook also quotes a statement of ‘Abd Allah ibn Mas‘ud (may Allah be pleased with him):
«ما رآه المسلمون حسناً فهو عند الله حسن، وما رأوه سيئاً فهو عند الله سيّئ»
What Muslims regard as good is good before Allah, and what they regard as bad is bad before Allah.
The source presents this statement as supporting consensus. It is to be identified as a Companion’s reported statement, rather than silently attributed as the Prophet’s own hadith.
Nor should it be detached from the technical definition and made to mean that everyday public preferences automatically count as qualified juristic consensus.