Sankaracarya's Vivekachudamani 450

यत्कृतं स्वप्नवेलायां पुण्यं वा पापमुल्बणम् ।

सुप्तोत्थितस्य किं तत्स्यात्स्वर्गाय नरकाय वा ॥

yatkṛtaṃ svapnavelāyāṃ puṇyaṃ vā pāpamulbaṇam |

suptotthitasya kiṃ tatsyātsvargāya narakāya vā ||

(Sankaracarya's Vivekachudamani 450)

Can the meritorious acts or sinful deeds that a person has imagined doing in a dream take one to heaven or hell when one has woken up?

The following sloka will be interesting because there are answers for the sloka above.