

In Hinduism, the festival of Diwali is not just a celebration of lighting lamps; it's a grand festival to welcome the great power, Mahalakshmi. This Puja, when performed at the auspicious time, is believed to bring stable wealth (Sthir Lakshmi) and prosperity into one's life.
Here is the complete detailed procedure and essential mantras for Diwali Puja:
Before commencing the Puja, it is essential for the body and mind to be purified.
Pavitrikaran Mantra (Purification)
First, sprinkle water over yourself, the seating mat (asan), and the puja materials using a kusha grass or flower:
"Om Apavitraḥ Pavistro Vā Sarvāvasthāṁ Gato'pi Vā । Yaḥ Smaret Puṇḍarīkākṣaṁ Sa Bāhyābhyantaraḥ Śuciḥ॥" (Meaning: Whether pure or impure, in all conditions, the one who remembers the lotus-eyed Lord, is purified externally and internally.)
Sip water three times (Achaman), then wash your hands:
Next, chant this mantra to purify your seat:
"Om Pṛthvī Tvayā Dhṛtā Lokā Devi Tvaṁ Viṣṇunā Dhṛtā । Tvaṁ Ca Dhārayamāṁ Devi Pavitraṁ Kuru Cāsanam॥"
Chandan Lepan (Applying Sandalwood Paste)
Apply sandalwood paste with your ring finger while chanting:
"Chandanasya Mahat Puṇyam Pavitraṁ Pāpanāśanam, Āpadāṁ Harate Nityam Lakṣmī Tiṣṭha Sarvadā।"
No Puja is complete without the Sankalp (vow/intention). Hold offerings—a flower, fruit, betel nut, betel leaf, silver coin, coconut (with water), sweets, and dry fruits—in your hand and chant the full Sankalp Mantra.
Saṅkalpa mantra: “Ōma viṣṇu viṣṇu viṣṇu:, Ōma tatsādyā śrī purāṇapuruṣōttamasya viṣṇurāgya pravarmānasya brāhmaṇōhni dusarā parād'dha śrī svētāvarahakalpa sātavā vaivasvatamanavantarā, aṭhṭhāvīsāvā kaliyuga, tujhyā nagarī kaliyugācā pahilā ṭappā. Bud'dhāvatāra vīra vikramādityanr̥patē: 2082 Tamē'bdē sid'dhārthī nāma sanvatsarē dakṣiṇāyanē hēmantā rītō mahāmaṅgalyapradē masanama masōttamē kārtika māsē kr̥ṣṇa pakṣē amāvasa tithī sōmavasarē hasta nakṣatrē vaidhr̥ti yōgādi yōganiṣēṣēṇi suganyōśanēma (suganyōgādi śagunāmē). Lēna) mī yā kuḷātīla āhē (mājhē nāva ghyā) sarva pāpān̄cyā nāśāsāṭhī, sarva duṣṭān̄cyā śāntīsāṭhī, śrutismr̥tīta sāṅgitalēlyā phaḷān̄cyā prāptīsāṭhī, kuladēvatān̄cyā pūjēsāṭhī. Mahāgaṇapatī navagraha praṇavā.”
(Note: While chanting the Sankalp, ensure you mention the name of your city/village and your Gotra (lineage).)
Tie a sacred thread (Mauli) on the Kalash (pot) and place mango leaves on top. Put a betel nut, Durva grass, Akshat (rice grains), and a coin inside the Kalash. Place a coconut wrapped in cloth on the pot. Hold Akshat and a flower, and invoke Varuna Devta:
Aavahan Mantra: "Oṃ Tattvāyāmi Brahmaṇā Vandamānastadāśāste Yajamāno Havibhiḥ । Aheḍamāno Varuṇeha Bodhyuruśaṁsa Māna Āyuḥ Pramiṣīḥ । (Asmin Kalaśe Varuṇaṁ Sāṅga Sapārivāraṁ Sāyudha Saśaktikamāavāhayāmi, Oṃ Bhūrbhuvaḥ Svaḥ Bho Varuṇa Ihāgaccha Ihatiṣṭha. Sthāpayāmi Pūjayāmi॥)"
As per tradition, Lord Ganesha is worshipped first. Hold a flower in your hand and meditate on Ganesha.
After Ganesha Puja, the ritual for Mahalakshmi Puja begins:
Dhyan Mantra (Meditation)
First, meditate upon Goddess Lakshmi:
"Oṁ Yā Sā Padmāsanasthā, Vipula-Kaṭi-Taṭī, Padma-Dalāyatākṣī. Gambhīrāvartanābhiḥ, Stana-Bhara-Namitā, Śubhra-Vastrottarīyā.. Lakṣmī Divyairgajendraiḥ. Ja-Khacitaiḥ, Snāpitā Hema-Kumbhaiḥ. Nityaṁ Sā Padma-Hastā, Mama Vasatu Gṛhe, Sarva-Māṅgalya-Yuktā॥"
Hold Akshat in your left hand and offer grains with your right hand, chanting:
Similar to Anga Puja, offer Akshat while chanting the mantras:
Finally, seek forgiveness for any unintentional mistakes (Kshamā Prārthanā) and conclude the ceremony with the Ārti.