by our Prophet and You would send us rain; and now we seek a means to You by the uncle of our Prophet.
What this means is that we draw near to You through his supplication, his intercession, and his entreaty; and likewise we draw near to You through the supplication, entreaty, and intercession of his uncle. It does not mean that we are swearing an oath upon You by him, or anything of that sort that people do after his death and in his absence—
such as when some people say, “I ask You by the rank of so-and-so with You,” or claim, “We seek a means to Allah through His prophets and His saints,” and then cite a fabricated ḥadīth:
“If you ask Allah, ask Him by my standing, for my standing with Allah is immense.”
Had this been the form of tawassul practiced by the Companions, as ʿUmar (may Allah be pleased with him) mentioned, they would have continued to do so through him after his death and would not have turned instead to al-ʿAbbās. They knew full well that beseeching Allah by him and swearing oaths by him is greater than doing so by al-ʿAbbās. It is therefore evident that the tawassul they spoke of is something done with the living, not the dead: it is to seek their supplication and their intercession. A living person can be asked for that, whereas nothing—neither supplication nor anything else—is to be asked of the dead.
The same holds true for the ḥadīth of the blind man. He asked the Prophet (Allah bless him and grant him peace) to pray for him so that Allah would restore his sight. The Prophet taught him a supplication in which he directed him to ask Allah to accept the Prophet’s intercession on his behalf. This shows that the Prophet interceded for him and instructed him to ask Allah to accept that intercession, and that his statement: