The Egyptian Book of the dead by P. Le Page Renouf and Edouard Naville

4. On the last day of the month of Choiak the great solemnity of setting

up the Tat ⁂ as the symbol of Osiris was observed down to the latest periods. The tablets of Pasherenptah, high priest of Ptah at Memphis, speak of this great dignitary as the king’s second or deputy in ‘Raising the Tat.’ But Brugsch has published a picture (_Thesaurus_, V, 1190), copied by Dr. Erman from a tomb of the XVIIIth dynasty, in which Amenophis III himself helps to raise the Tat, and the queen Ti and the royal princesses take part in the ceremony. The procession is described as marching four times round the sanctuary of Ptah-Seker-Osiris. See Plate IX.