According to the Vedic calendar, 29th January is Mauni Amavasya. On this auspicious occasion, it is customary to take a bath in the Ganga. It is stated in the Sanatan scriptures that taking a bath in the Ganga on Mauni Amavasya liberates one from sins committed knowingly or unknowingly. Along with this, one gets the blessings of Mother Ganga.

On the day of Mauni Amavasya, after taking a bath in the Ganges, Lord Shiva is worshipped with devotion. On Amavasya Tithi, tarpan and pinddaan are also performed for the ancestors. By performing tarpan and pinddaan for ancestors on Mauni Amavasya, ancestors of three generations attain salvation. At the same time, the blessings of ancestors shower on the Sadhak i.e. the person. Their blessings increase happiness and good fortune. If you also want to get the blessings of the ancestors, then do tarpan for ancestors on the day of Mauni Amavasya . At the same time, do recite these stotras while performing tarpan.

Ganga Stotra

Om Namah Shivayai Gangayai, Shivdayai Namo Namah.

Namaste Vishnu-Rupiniyai, Brahma-Murtyai Namostu Te.

Namaste Rudra-Rupiniyai, Shankaryai Te Namo Namah.

Sarva-Dev-Swarupinya, Namo Bheshaj-Murttaye.

Sarvasya sarva-vyadhinam, bhishak-shresthyai namostu te.

Sthaasnu-jangam-sambhut-vish-hantryai namostu te.

Samsara-vish-nashiniyai, jeevanayai namostu te.

Tap-Tritya-Samhantryai, Pranashyai Te Namo Namah.

Shanti-santana-karinyayi, Namaste pure-murtaye.

Sarva-sanshudhi-karinyayi, namah papaari-murttaye.

Bhukti-mukti-pradayinyai, bhadradayai namo namah.

Bhogopbhog-dayinyai, bhog-vatyai namostu te.

Mandakinyai Namastestu, Swargadayai Namo Namah.

Namasterailokya-bhushayai, tri-pathayai namo namah.

Namastri-shukla-sansthaayai, kshama-vatyai namo namah.

Tri-hutashan-sansthaayai, tejo-vatyayi namo namah.

Nandayai Linga-Dharinyai, Sudha-Dharatmane Namah.

Namaste Vishva-Mukhayai, Revatyai Te Namo Namah.

Namastestu to the great, Namastestu to the people.

Namaste Vishwamitrayai, Nandinyai Te Namo Namah.

Prithvyai Shivamritayai Cha, Su-Vrishayai Namo Namah.

Parapara-shatadhayai, tarayai te namo namah.

Paash-jaal-nikrantinayai, abhinayai namostu te.

Shantaayai cha sanyariyaayi, varadaayai namo namah.

Ugraayai sukh-jagdhyai cha, sanjivinyai namostu te.

Brahmishthaayai-Brahmadaayai, Duritaghnyai Namo Namah.

Pranatarti-prabhanjajinyai, Jagmatre namostu te.

Sarvapat-Prati-Pakshaayai, Mangalayai Namo Namah.

Sharanagat-dinart-paritraan-parayane.

Sarvasyarti-Hare Devi! Narayani! Namostu te..

Nirlepayai durg-hantryai, sakshayai te namo namah.

Parapara-Parayai Cha, Ganga Nirvana-Dayini.

Ganga Mamaagrato Bhuya, Ganga Me Tishtha Pagetah.

Parsvayoredhi in Ganga, position in Ganga Tvayastu.

Tvamev mool-prakritistvam puman par eva hi.

Ganga is God, Shivastubhyam Namah Shiva.

fruition

Here we read the stotram, 

Dashadha muchyate papaih, kay-vaak-citt-sambhavaih.

Rogastho rogato muchyed, vipadbhyascha vipad-yutah.

Muchyate bandhanad baddho, bheeto bheeteah pramuchyate.

Ancestral armor

Kriṇushva Paaj: Prasitim Na Prithvim Yahi Rajev Amvan Ibhen.

Trishvim anu prasitim drunaano asta asi vidhya rakshasah tapishthaih.

Tav Bhramasa Ashuya Patantyanu Sprish Dhrishta Shoshuchanah.

Tapunshyagne Juhva Patangan Sandito Visrija Vishva-Gulkah.

Prati spasho visarja turnitamo bhava payu-rvisho asya adbadh.

Yo Na Doore Aghashanso Yo Antyagne Makishte Vyathira Dadharshith.

Yo No Aratim Samidhan Chakra Neecha Tan Dhakshyat San Na Suksham.

Urdhvo bhava prati vidhyaadhi asmat aavih krinushva daivyanyagne.

Ava Sthira Tanuhi Yaatu-Junam Jamim Ajamim Pramrinihi Shastriun.