Hadith 8:2600
Abu Bakr narrated to us, he said: Sahl ibn Yusuf narrated to us, from ‘Amr, from al-Hasan, he said: Whoever does not stand at Jam‘ (Muzdalifah), then there is no Hajj for him, and he must perform Hajj the following year.
حدثنا أبو بكر قال نا سهل بن يوسف عن عمرو عن الحسن قال من لم يقف بجمع فلا حج له ويحج من قابل