Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
tabarani:84Abū Muslim al-Kashhī > Muḥammad b. ʿAbdullāh al-Anṣārī from my father > Thumāmah b. ʿAbdullāh b. Anas > Anas > ʿUmar

[Machine] "O Allah, when we were afflicted with drought during the time of our Prophet ﷺ, we sought your assistance through our Prophet's intercession, ﷺ . And now, we seek your assistance through the intercession of the uncle of our Prophet ﷺ, who was pleased with him."  

الطبراني:٨٤حَدَّثَنَا أَبُو مُسْلِمٍ الْكَشِّيُّ ثنا مُحَمَّدُ بْنُ عَبْدِ اللهِ الْأَنْصَارِيُّ حَدَّثَنِي أَبِي عَنْ ثُمَامَةَ بْنِ عَبْدِ اللهِ بْنِ أَنَسٍ عَنْ أَنَسٍ

أَنَّ عُمَرَ ؓ خَرَجَ يَسْتَسْقِي وَخَرَجَ بِالْعَبَّاسِ مَعَهُ يَسْتَسْقِي فَيَقُولُ «اللهُمَّ إِنَّا كُنَّا إِذَا قَحَطْنَا عَلَى عَهْدِ نَبِيِّنَا ﷺ تَوَسَّلْنَا إِلَيْكَ بِنَبِيِّنَا عَلَيْهِ السَّلَامُ وَإِنَّا نَتَوَسَّلُ إِلَيْكَ بِعَمِّ نَبِيِّنَا ﷺ وَرَضِيَ عَنْهُ»