There are multiple versions of this Salawat. This is the version that Shaykh has given ijaza for.
Khatam is 1000. Also given khatam ijaza for 100 or 33 in shortened circumstances.
Salat al-Tibbiyya (Arabic: صلاة الطبية; The Prayer of Medicine) or Salat al-Tibb al-Quloob (Arabic: صلاة طب القلوب; The Prayer of the Medicine of Hearts) is a prayer of inward and outward healing. It was composed by the prominent Egyptian scholar Shaykh Ahmed al-Dardir (d. 1204 AH/1786). It is commonly known as Durood-e-Shifa al-Quloob in South Asia and Sholawat Tibbil Qulub in Far East Asia. Reciting this prayer is known to cure spiritual and physical illness by the permission of Allah the Exalted.
Arabic
أَعُوذُ بِاللّٰهِ مِنَ الشَّيْطَانِ الرَّجِيمِ بِسْمِ اللهِ الرَّحْمنِ الرَّحِيْمِ
اللَّهُمَّ صَلِّ عَلَىٰ سَيِّدِنَا مُحَمَّدٍ طِبِّ الْقُلُوبِ وَدَوَائِهَا وَعَافِيَةِ الْأَبدَانِ وَشِفَائِهَا وَنُورِ الْأَبصَارِ وَضِيَائِهَا وَقُوتِ الْأَرْوَاحِ وَغِذَائِهَا وَعَلَىٰ آلِهِ وَصَحْبِهِ وَسَلِّمْ
Transliteration/Translation
Allahumma salli ʿalā Sayyidunā Muḥammadin ṭibbil qulūbi wa dawāʾihā Wa ʿāfiyatil abdāni wa shifāʾihā Wa Nūril abṣāri wa ḍiyāʾihā Wa qūtil arwāḥi wa ghidhāʾihā Wa ʿalā ālihi wa ṣaḥbihi wa sallim
O Allah, send prayers and peace upon our Master Muhammad, the medicine of hearts and their treatment, the soundness of bodies and their cure, the light of vision and its illumination, the sustenance of souls and their nourishment and (send blessings) upon his family and his Companions.