8.30 majjhimeṇaṃ vayasa ege, saṃbujjhamāṇā samuṭṭhitā.
Some people accept initiation, being awakened in the middle period of their life.
Bhāṣyaṃ Sūtra 30
Some people awake and accept renunciation in their middle age. In the fifteenth sūtra, it has been prescribed that renunciation is possible in all the three age-groups. That is the general rule. In the present sūtra there is the prescription of a particular age-group. Ordinarily people get renunciated in the middle age-group. This is why, according to Cūrṇi, the middle age-group has been mentioned.[1]
Ācārāṅga Cūrṇi, pp.266-267: 'majjhimagahaṇaṃ tu prāyaso majjhime vaye bujjhaṃti teṇa taggahaṇaṃ, te tu bhuttabhogittā vigayaouyā suhaṃ virāgamagge ciṭṭhaṃti, viṇṇāṇaṃ ca tesiṃ paṭuyaraṃ bhavati, gaṇaharā ya pāyaso majjhime vaye pavvaiyā, tehi ya etaṃ suttaṃ āyaṇikkhamaṇapajjāyarūveṇaṃ bhaṇitaṃ, bhagavaṃpi ya majjhimavae paḍivaṇṇo nikkhaṃto, eakāraṇao majyhimavayagahaṇaṃ'.