Is there any objection to writing the alif maqṣūrah with dots beneath the yā’, as in “Allāhumma ṣalli ‘alā Muḥammad” and “waḍ-ḍuḥā,” knowing that the dots were introduced to differentiate between the alif maqṣūrah and the final yā’?

Scholars of Quranic orthography (rasm al-Qur'an) and ضبطه (dotting/vowelization) have discussed the ruling on dotting the final ya' (ي). They concluded that it is permissible to dot it or to leave it undotted. It is stated in "Daleel al-Hayran 'ala Mawrid al-Dham'an" that the final ya' may or may not be dotted, and similarly for the final nun (ن), fa' (ف), and qaf (ق). It also mentions that Al-Dani sufficed with not dotting these four letters when they are final, as their form is not confused. The Academy of the Arabic Language in Cairo approved in 1980 that the alif layyinah (soft alif) should be written in the form of an undotted ya', whereas the ya' itself should be dotted for differentiation. Accordingly, it is permissible to dot the final ya' or to leave it undotted in the writing of the Holy Quran or other texts.