Gods Indra and Marut have been worshiped in the sixth Sukta from the first Mandal of Rigveda. Its sages are Madhuchhanda and Vishwamitra. The verse used in these is Gayatri. There are total 10 Mantras or Shlokas in this Sukta.
युञ्जन्ति ब्रध्नमरुषं चरन्तं परि तस्थुषः । रोचन्ते रोचना दिवि ॥1॥
The sage says – All things are related to the violence-free form of Indra present in the form of Sun in heaven. The planets and constellations are part and parcel of the same Indra. The creatures of the three worlds consider the form of gods in their actions to be associated with the same Indra.
यञ्जन्त्यस्य काम्या हरी विपक्षसा रथे । शोणा धृष्णू नृवाहसा ॥ 2 ॥
Through this verse, the sage says – Red colored horses are deployed on both sides of Indra’s chariot, which are capable of fighting and destroying the enemy. He takes the brave men on the chariot and leads them to the battlefield.
केतुं कृण्वन्नकेतवे पेशो मर्या अपेशसे । समुषद्भिरजायथाः ॥ 3 ॥
Sages say – Human beings are meant to attain new life every day! You become sleepless, unconscious and unconscious at night and become alert again in the morning.
आदह स्वधामनु पुनर्गर्भत्वमेरेरि। दधाना नाम यज्ञियम् ॥ 4 ॥
The sage says through this verse – Marudgana, the most useful for the Yajna, gets the Meghadi womb again and again for the desire and growth of food grains.
वीलु चितारुजत्नुभिर्गुहा चिदिन्द्र वह्निभिः । अविन्द उस्त्रिया अनु ॥ 5 ॥
Sages say – O Indra, the one who penetrates the strong fort! You succeeded in retrieving the cows hidden in the cave with the help of Tejaswi Marudgana.
देवयन्तो यथा मतिमच्छा विदद्वसुं गिरः । महामनूषत श्रुतम् ॥ 6 ॥
Sages say – We praise with our sharp intellect those wise sages who aspire to attain divinity, the great famous ones, the glorious brave deserters.
इन्द्रेण स हि दृक्षसे संजग्मानो अबिभ्युषा । समानवर्चसा ॥ 7 ॥
The sage says – The desert people who live with Indra, are fearless, are always happy, and have equal brightness, look good when united.
अनवद्यैरभिद्युभिर्मखः सहस्वदर्चति । गणैरिन्द्रस्य काम्यैः ॥ 8॥
The sage says – In this Yagya, Indra, the ally of the innocent, successful and powerful Maruts who grants blessings, is always worshipped.
अतः परिज्मन्ना गहि दिवो वा रोचनादधि । समस्मिन्नृञ्जते गिरः ॥ 9 ॥
Through this verse the sage says – O Marut who is wandering everywhere! You come here from space, sky and heaven. We praise you through speech in this yagya.
इतो वा सातिमीमहे दिवो वा पार्थिवादधि । इन्द्रं महो वा रजसः ॥ 10 ॥
Sages say – We worship Indra for the sake of getting abundant wealth from earth, space and heaven.