What did Arjun get from Lord Shiva?

Pashupatastra
Lord Shiva and Goddess Parvati gave darshan to Arjuna and blessed him with the Pashupatastra. Lord Shiva also told Arjuna that he was tired of fighting with Arjuna and was impressed with him more than his student Parashurama. Lord Shiva also bestowed Arjuna- the name “Vijaya” (invincible).

What promise did drona give to Arjuna?

Drona was greatly impressed by Arjuna’s concentration, determination, and drive, and promised him that he would become the greatest archer on earth. Drona gave Arjuna the special knowledge of the Dhanurveda due to his capability and zeal to learn the new things.

Why did Lord Krishna advise Arjuna to keep Pashupatastra?

Apart from Arjuna, Bhisma, Drona and Karna also possessed Pashupatastra so Lord Krishna must have advised him so that Arjun remains at par with them.

Which is more powerful Bhahmastra or Brahmashirsha weapon?

However Brahmashirsha Weapon having 4 heads of Lord Brahma is more powerful and destructive than Bhahmastra probably evolution of the latter. This knowledge was imparted to Arjuna and Aswatthama through Guru Drona. Though Aswatthama was having the knowledge of invoking the weapon but not revoking one unlike Arjuna.

Why did Dhananjaya destroy the weapons issued from Drona?

 When Drona failed to gain any ascendency over the son of Pandu, the son of Bharadwaja, that warrior acquainted with the course of all weapons, invoked into existence the Aindra, the Pasupata,the Tvashtra, the Vayavya, and the Yamya weapons. As soon as those weapons, issued from Drona’s bow, Dhananjaya destroyed them quickly.

What is the significance of Brahmashirsha astra in Mahabharata?

Brahmashirsha astra was also a deadly weapon. Its knowledge was possessed by Arjuna (fully) and Ashwatthama (partially) during Mahabharata. The later used it on an unborn child and got cursed by the lord Krishna to roam around the world until the end of Kaliyuga. – iammilind Jan 22 ’15 at 6:20.