Vajrasuci (Siddhacarya Ghoshapada) 53

This which has been spoken by us to destroy the delusion
of the twice-born whose intellects are ruined:
let the wise accept it if it is reasonable, or reject it if it be unreasonable.

This is the work of the revered master of perfection Aśvaghoṣa. Auspiciousness!
Even a caṇḍāla established in proper conduct, the gods know him to be a brāhmaṇa. | — Words of Vyāsa, cited in Yatidharma, p. 37
The barbarians originating from Egypt, instructed by Kāśyapa himself,
consecrated from the śūdra class, attained to the brāhmaṇa class. | — Bhaviṣya Purāṇa, Pratisarga, fourth section
Those barbarians became Vaiṣṇavas through the influence of Rāmānanda. | — Bhaviṣya Purāṇa, Pratisarga, 4.21.54
61. śvayuvamaghonāmataddhite | Pāṇini Grammar Sūtra, 6.4.133
62. dṛptaṃ, Bengal manuscript
63. utpannā, Pune, Madras, Bengal manuscript
64. brāhma kṣatriya, Bengal manuscript
65. ya, Madras manuscript
66. -va-, Pune manuscript
67. vṛṣalīphenapītasya | Manusmṛti, 3.19
68. Aṅgiras, 1.48; Āpastamba, 8.7; Vyāsa, 4.67
69. Taking a śūdra woman to his bed, a brāhmaṇa falls into a degraded state;
the ancestors and gods do not eat of [his offerings], nor does he go to heaven.
— Manusmṛti, 3.17–18; Mahābhārata, Anuśāsanaparvan, 47.9
He whose food a śūdra woman cooks every day, and who has a śūdra woman as mistress of the household,
shunned by the ancestors and gods, that twice-born goes to the Raurava hell. || — Vyāsa, 4.68
70. -canaprā-, Bengal manuscript
71. Satyakāma Jābāla: “Sir, I do not know of what family lineage I am. I asked my mother; she replied to me: ‘Moving about much as a maidservant in my youth, I obtained you. As such, I do not know of what family lineage you are. My name is Jabālā and your name is Satyakāma.’ So I am Satyakāma Jābāla, sir.”
... He said to him: “A non-brāhmaṇa could not declare this. Fetch the sacrificial firewood, gentle one; I will initiate you.” (See Chāndogya Upaniṣad 4.4 for the parallel passage)
72. hariṇī, ariṇī, Madras manuscript
73. kaṭhino, Bengal manuscript
74. (See verses 23–26)
Born from the womb of a doe, the great sage Ṛṣyaśṛṅga
became a brāhmaṇa through ascetic penance; therefore birth is not the cause.
Born from the womb of a dog-cooker woman, the father of Vyāsa, O king,
became a brāhmaṇa through ascetic penance; therefore birth is not the cause.
Born from the womb of an owl, the great sage called Kaṇāda
became a brāhmaṇa through ascetic penance; therefore birth is not the cause.
And born from the womb of a courtesan, the great sage Vasiṣṭha
became a brāhmaṇa through ascetic penance; therefore birth is not the cause.