On the picture: The east wall of the prayer hall, and an old tomb. Local tradition tells it is the grave of Tekeli Lala Mehmet Paşa, who had the mosque built. In fact, the man was buried in the grave yard of the Şeyh Vefa Camii in Istanbul; he had been ‘Lala’ (tutor) to the future Mehmed III and was appointed Grand Vizier in 1595, ten months after his pupil ascended to the throne. Unfortunately, he died suddenly, only ten days after this promotion…

Correspondent: J.M.Criel, Antwerpen.
Source: Website of ‘Manisafx’ & Vikipedia .

A notice in Turkish read:

Muhakkak suretli Mehmet Paşa bu camii Cenab-ı Hakka mülaki ve yakın olmak kaydı ile çok katı ve sağlam malı bina etti. Canab-ı Hak cennet bahçeleri makamatını yüksek olarak baki ve ebedi kılsın. Vassaf ismindeki zat bu camiin tarihini bu şehirde şerefli ve ali olmak üzere binasını baki kılsın. (Cami un ala fişerifil belet) cümlesinden ebcet harfleri hesabı ile hicri 977 tarihi çıkmaktadır. M. 1569.

I am very glad a viewer translated this text, as follows: "For sure, Mehmet Pasha built this hard and strong mosque to meet and to get closer to God. God keeps his place at heaven gardens permanent and eternal.
The person called Vassaf keeps this mosque permanent and its history, glorious and honourable in this city . (Cami un ala fişerifil belet) From the count of ebced letters of sentence, the defined date is 977 (according to hijri calendar). 1569 (Gregorian calendar) "