Karma Vipaka Samhita 49.15

हरिवंशश्रुतिं देवि संकल्प्य श्रद्धया युतः ॥

Let him make the vow and have the Harivamsha (a sacred book about Krishna) heard with faith, O Goddess. Let him have a homa (fire offering) done…

गोदानं विधिवत्कुर्याच्छिवपूजनमेव च ॥

Let him give a cow by the rule, and worship Shiva. When this is done, without doubt he soon gets a son.

मृतवत्सा लभेत्पुत्रं चिरंजीविनमुत्तमम् ॥

The mritavatsa (one whose children die young) gets a son, the best, who lives long. The kakavandhya (a woman who has only one child) gives birth…