%e0%a4%95%e0%a5%80 %e0%a4%97%e0%a4%be%e0%a4%82%e0%a4%a1 %e0%a4%95%e0%a5%80 %e0%a4%ab%e0%a5%8b%e0%a4%9f%e0%a5%8b | %e0%a4%ad%e0%a4%be%e0%a4%ad%e0%a5%80

$$ %E0%A4%BC%E0%A4%BE%E0%A4%AD%E0%A5%80 %E0%A4%95%E0%A5%80 %E0%A4%97%E0%A4%BE%E0%A4%82%E0%A4%A1 %E0%A4%95%E0%A5%80 %E0%A4%AB%E0%A5%8B%E0%A4%9F%E0%A5%8B $$

Which, when translated to English, means: when translated to English

$$ भाभी की गाड़ी की फोटो $$ when translated to English

Decoding the entire string:

Translates to:

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36