Shiva Purana
द्रव्येणैकेन वा ऽलाभे जुहुयाच्छ्रद्धया पुनः ॥ प्रायश्चित्ताय जुहुयान्मंत्रयित्वाहुतित्रयम् ॥ ३४ ॥
If full articles are not available only one material shall be offered with devotion. As an expiation he shall perform three Āhutis repeating the mantra.
english translation
dravyeNaikena vA 'lAbhe juhuyAcchraddhayA punaH ॥ prAyazcittAya juhuyAnmaMtrayitvAhutitrayam ॥ 34 ॥
hk transliteration by Sanscript