Today we will look at an example of the application of 8-4-62 झयो होऽन्यतरस्याम् in one of the sutras of the अष्टाध्यायी 1-1-10 नाज्झलौ

The वृत्तिः for this sutram from Laghu Siddhanta Kaumudi is:
झयः परस्य हस्य वा पूर्वसवर्णः
When a झय् letter precedes, then in place of the letter ‘ह्’ there is optionally a substitute which is पूर्वसवर्ण: (सवर्ण: with the preceding झय् letter).

1. अच् + हलौ । 1-4-14 सुप्तिङन्तं पदम् अच् gets the पदसंज्ञा, since it ends in the सुँ-प्रत्ययः

2. अज् हलौ । 8-2-39 झलां जशोऽन्ते The झल् letter च् at the end of the पदम् अच् gets the जश् (ज् ब् ग् ड् द्) as आदेशः By 1-1-50 स्थानेऽन्तरतमः, the closest substitute should be chosen. In this case, since the place of articulation of च् is the तालु, we choose ज्, which also has the same place of articulation.

3. अज् झलौ । This is an optional form that we get by the rule 8-4-62 झयो होऽन्यतरस्याम् In this case, the सवर्णाः of ज् are च् छ् ज् झ् ञ्, by the rule 1-1-9 तुल्यास्यप्रयत्नं सवर्णम् because they all share the same place of articulation तालु and same internal effort स्पृष्टम् Now, again by 8-4-62 झयो होऽन्यतरस्याम्, the closest substitute has to be chosen which is झ्, since both the letters झ् and ह् are voiced consonants and are also aspirated.

Thus we get two final possible forms अज्हलौ and अज्झलौ

Questions:

1. Following the same steps try the sandhi इक् + ह्रस्वादेशे (अष्टाध्यायी 1-1-48 एच इग्घ्रस्वादेशे) Please make sure to check that all conditions are met at each step.

2. Identify the above sandhi and break it in the सूत्रम् 1-2-27 ऊकालोऽज्झ्रस्वदीर्घप्लुतः