What dhikr is sunnet during Hac?

Dhikr (remembrance of Allah) is the spiritual essence of Hac, transforming physical actions into acts of deep worship. The most important dhikr during Hac is the Telbiye: 'Labbayk Allahumma labbayk, labbayk la sharika laka labbayk, innal hamda wan-ni'mata laka wal-mulk, la sharika lak.' This should be recited frequently and aloud (for men) from the moment of entering ihram until the stoning of Cemerat al-Aqaba on the 10th.

At Arafat, Hz. Peygamber (sallallahu aleyhi ve sellem) said: 'The best dua is on the Day of Arafat, and the best thing that I and the prophets before me said is: La ilaha illa Allahu wahdahu la sharika lah, lahul mulku wa lahul hamdu wa huwa ala kulli shay'in qadir.' During the days of Tashreeq (11th-13th), the takbirat of Tashreeq are prescribed: 'Allahu Akbar, Allahu Akbar, la ilaha illa Allah, Allahu Akbar, Allahu Akbar, wa lillahil hamd.' During tavaf, there is no specific prescribed dhikr — scholars advise making personal dua, reciting Kur'an, or any dhikr that moves your heart. Between the Yemeni corner and the Hacer-ul Esved, the sunnah dua is: 'Rabbana atina fid-dunya hasanah wa fil-akhirati hasanah waqina adhab al-nar.'