Shiva Purana
प्रातरुत्थाय सुस्नातो लिंगमभ्यर्च्य शाम्भवम् ॥ वर्षं जपन्निदं स्तोत्रमपुत्रः पुत्रवान्भवेत् ॥ ६१ ॥
If an issueless man gets up early in the morning, takes his bath, worships Śiva’s phallic image, recites this hymn and continues the practice for a year, he will surely secure a son.
english translation
prAtarutthAya susnAto liMgamabhyarcya zAmbhavam ॥ varSaM japannidaM stotramaputraH putravAnbhavet ॥ 61 ॥
hk transliteration by Sanscript