Sasuke and his team head for the northern hideout to recruit their next member, Jugo. On the way, Karin explains that the northern hideout is a site for conducting horrific human experiments. A ninja with abnormal homicidal impulses, Jugo is the sole carrier of the enzyme necessary to create Orochimaru’s curse mark...
There's no mistake about it.
I heard it from a reliable source.
لا شكّ في هذه المعلومات، سمعتُها من مصدر موثوق
Es besteht kein Zweifel. Ich habe es
von einer sicheren Quelle erfahren.
No cabe duda. Lo escuché 
de una fuente confiable.
No cabe duda. Me lo ha 
contado una fuente fiable.
Non c'è alcun dubbio. 
Me lo ha detto una fonte del tutto attendibile.
Não há dúvidas. Eu soube
por uma fonte confiável.
Самая что ни на есть.
 Я узнал от надёжного источника.