Prohibited to marry a girl who does not have a brother.

We Can see some References Where it mentioned that prohibited to marry a girl who does not have a brother In sanatan dharma.

In Nirukta 3/5: Yaska says that it is prohibited to marry a girl who does not have a brother.

• We find the same thing in Manusmriti 3/11: 

यस्यास्तु न भवेद्भाता न विज्ञायेत वा पिता। नोपयच्छेत तां प्राज्ञः पुत्रिकाधर्मशङ्कया ।। ११ ।।

The wise man shall not marry one who has no brother, or whose father is not known; for fear of her having the character of the “appointed daughter.”—(11)

Gautam Dharmasutra 28/20: Through fear of that (a man) should not marry a girl who has no brothers.

• Also Mahabharat Mentioned This Thing.

Mahabharata/Anushasana Parva/Chapter 44/Verse 15: O Bharat! One should never marry a girl who does not have a father or brother.