Grammatical Sūtra: स्तुतस्तोमयोश्छन्दसि stutastomayośchandasi 
Individual Word Components: stutastomayoḥ chandasi
Sūtra with anuvṛtti words: stutastomayoḥ chandasi pūrvatra (8.2.1), asiddham (8.2.1), saṁhitāyām (8.2.108), apadāntasya (8.3.55), mūrdhanyaḥ (8.3.55), saḥ (8.3.56), iṇkoḥ (8.3.57), ekeṣām (8.3.102)
Type of Rule: vidhi
Preceding adhikāra rule:8.3.64 (1sthādiṣv abhyāsena ca abhyāsasya)
Description:
The ((s)) of ((stuta)) and ((stoma)), in the Chhandas, is changed to ((ṣ)) in the opinion of some. Source: Aṣṭādhyāyī 2.0
In the domain of Chándas [according to some grammarians 104 the substitute retroflex 55 sibilant ṣ 39 replaces the dental sibilant s 56, preceded by a vowel other than phoneme-class /a/ 57, before 1.1.66 nominal padá-s of] stu-tá- `praised' and stóma- `praise' [in continuous utterance 2.108]. Source: From Aṣṭādhyāyī of Pāṇini In Roman Transliteration translated by Sumitra M. Katre, Copyright © 1987. Courtesy of the University of Texas Press.
Mahābhāṣya: With kind permission: Dr. George Cardona
1/5:stutastomayoḥ chandasi anarthakam vacanam pūrvapadāt iti siddhatvāt |*
2/5:stutastomayoḥ chandasi vacanam anarthakam |
3/5:kim kāraṇam |
4/5:pūrvapadāt iti siddhatvāt |
5/5:pūrvapadāt iti eva siddham
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1/5:stutastomayoḥ chandasi anarthakam vacanam pūrvapadāt iti siddhatvāt |*
2/5:stutastomayoḥ chandasi vacanam anarthakam |
3/5:kim kāraṇam |
4/5:pūrvapadāt iti siddhatvāt |
5/5:pūrvapadāt iti eva siddham
Kielhorn/Abhyankar (III,448.15-18) Rohatak (V,485)*Kātyāyana's Vārttikas