Intro
Just like his father, Mirza Basheer-uddin Mahmud Ahmad barely wrote anything.  Even in the Talim-ul-Islam school of Qadian, the Ahmadi-mullahs passed him even when he failed.  He stared the Tashhiz al-Azhan magazine in 1906 and was allowed to create his own sub-organization within Ahmadiyya, the Ansarullah.  The friends and well wishers of the Mian Sahib wrote for him and on his behalf.  In fact, in that same era, and in response to an argument by Muhammad Ali, the Qadiani-Khalifa seems to admit that his own newspaper, the Tashhiz al-Azhan continued to write the name Mirza Basheer-uddin Mahmud Ahmad as the editor of the newspaper (as late as 1913), even though he was not, he claims that he had no connection with his own newspaper since 1911.  Further, Mirza Basheer-uddin Mahmud Ahmad never wrote any books either, he dictated what needed to be written and then proof read it or had another mullah proof read it.  This even holds true for those commentaries of the Quran that Mirza Basheer-uddin Mahmud Ahmad takes credit for, which are incomplete.

The quote
“””In the first place, the words of Maulawi Muhammad Ahsan possess no special authority. They may be regarded as possessing the same value as the words of any other learned man. In the second place, the publication of his article in the Tashhidhul Adhhan cannot lend any special value to the views expressed therein, because the article was published in October, 1913, when I had already for two years ceased to have any active connection with the magazine. At that time Qazi Muhammad Zahuruddin Akmal was the de facto editor of the Magazine. The managing body of the paper, however, continued to print my name on the cover in order to retain its popularity, inasmuch as it was I who had been editing it since its foundation. Under the circumstances, if any particular view was at that time published in the magazine, it cannot justly be cited against me. I was not then its active editor nor were the articles published in the magazine shown to me whether in original or in proof.””””  (See “Truth about the split”, online edition, page 125,https://www.alislam.org/library/book/the-truth-about-the-split/ ).