Commentary on Iqtida' al-Sirat al-Mustaqim-23b

The reader: "And from 'Aishah (may Allah be pleased with her) and 'Abdullah ibn 'Abbas, they said:

When the illness struck the Messenger of Allah (peace and blessings be upon him), he began to throw a shawl of his over his face, and whenever he was distressed by it, he would remove it, and he said while in that state: The curse of Allah be upon the Jews and the Christians; they took the graves of their prophets as mosques. He was warning against what they did.

لما نزل برسول الله صلى الله عليه وسلم طفق يطرح خميصة له على وجهه، فإذا اغتم بها كشفها، فقال وهو كذلك: لعنة الله على اليهود والنصارى اتخذوا قبور أنبيائهم مساجد، يحذر ما صنعوا

Al-Bukhari and Muslim narrated it".

The Shaykh : Allahu Akbar, meaning before he died by five days, and at his death while he was in his final agony (peace and blessings be upon him), he was issuing this great warning, cursing the Jews and the Christians because they took the graves of their prophets as mosques, warning his ummah (the Muslim community) against that, which indicates the greatness and ugliness of this matter.
And in this hadith is evidence of the severity of what befell the Prophet (peace and blessings be upon him) at death, as he (peace and blessings be upon him), when he was ill, would suffer a fever as two of us would suffer a fever, and the wisdom of that is that Allah intended for the Prophet (peace and blessings be upon him) to attain the highest ranks of creation in patience during affliction and gratitude during ease, and other of the great attributes.
And it is known that patience does not exist except for something one is patient over, so it is necessary that the Prophet (peace and blessings be upon him and his family) received from affliction what required patience. Yes.
The reader: "And both of them narrated from Abu Hurayrah: that the Messenger of Allah (peace and blessings be upon him) said:

Let Allah destroy the Jews for they have taken the graves of their apostles as places of worship.

قاتل الله اليهود اتخذوا قبور أنبيائهم مساجد

Sahih Muslim 530a

. And in a narration by Muslim:

Allah cursed the Jews and the Christians that they took the graves of their prophets as mosques

لعن الله اليهود والنصارى اتخذوا قبور أنبيائهم مساجد

Sahih Muslim 529

So he prohibited taking graves as mosques in the last of his life, and then he cursed—and in the context—those who did that from among the People of the Book, to warn his ummah (the Muslim community) that they should not do that. 'Aishah said:

The Messenger of Allah (peace and blessings be upon him) said in the illness from which he did not recover: The curse of Allah be upon the Jews and the Christians; they took the graves of their prophets as mosques. And were it not for that, his grave would have been made prominent, except that he feared it would be taken as a mosque.

قال رسول الله صلى الله عليه وسلم في مرضه الذي لم يقم منه : لعن الله اليهود والنصارى اتخذوا قبور أنبيائهم مساجد، ولولا ذلك لأبرز قبره، غير أنه خشي أن يتخذ مسجدًا

Al-Bukhari and Muslim narrated it".