The Gayatri mantra for Rahu is a powerful invocation directed to the shadow planet Rahu, also known as Svarbhanu in Vedic texts. This mantra is structured in the classic Gayatri meter (24 syllables) and is found in various Jyotisha and Tantric compilations. According to the 'Mantra Mahodadhi' (a key text on mantra-shastra), each Navagraha Gayatri is designed to appease the specific planetary deity and mitigate its malefic influences. The mantra begins with 'Om Svarbhanave Vidmahe', addressing Rahu by his name Svarbhanu, which appears in the Rigveda (e.g., Rigveda 5.40.5-9) where he is described as the asura who caused the eclipse by swallowing the sun.
The second line 'Sainhikeyaya Dhimahi' invokes Rahu as the son of Simhika (Sainhikeya), a detail corroborated in the 'Devi Mahatmya' and Puranic accounts. The final line 'Tanno Rahu Prachodayat' is a prayer for Rahu to illuminate and guide the devotee. The beej-akshara (seed syllable) 'Om' is the primordial sound, and the mantra's phonetics are designed to create a resonant vibration that aligns with Rahu's shadowy and transformative energy. Traditionally, this mantra is chanted for protection from planetary afflictions such as Rahu's doshas in the birth chart, removal of fear, success in foreign lands, and relief from mysterious ailments that defy diagnosis.
The recommended chanting context includes reciting 108 times during Rahu Kala (the inauspicious period ruled by Rahu each day) or on Saturdays, especially during the waning moon phase. Ritual setting often involves a smoky quartz or blue sapphire, blue lotus flowers, and a dark cloth. Cautions: This mantra should be chanted with proper intention and after receiving guidance from a qualified guru, as Rahu's energy is intense and can amplify both positive and negative tendencies if misused. The 'Shaktisangama Tantra' warns that reckless chanting without purification may lead to disturbances.
Thus, it is advised to perform the japa with a clear mind and in a clean, consecrated space.
Om. Let us meditate on Svarbhanu (Rahu). May the son of Simhika (Rahu) inspire us. May that Rahu illuminate our intellect.
The mantra contains the seed syllable 'Om' (ॐ) as the primordial beej. The Gayatri meter itself is considered a beej structure, but no additional distinct beej-aksharas like hrīṃ or klīṃ are present.