Instantiate at position

I am trying to implement a simple throw-stone script and everything works fine But the position of the instantiated projectile. I am using mixamo animation events for this - and I am instantiating a projectile after 2 seconds (wher, in animation, the hand is in the last position to hold the stone). Here's what I came up with so far

 using UnityEngine;
 using System.Collections;
 
 public class InstantiateStone : MonoBehaviour
 {
     public Rigidbody stonePrefab;
 
     void  Start()
     {
         StartCoroutine(waitSeconds(2.0f));
     }
     
     IEnumerator waitSeconds(float seconds)
     {
         yield return new WaitForSeconds(seconds);
         Rigidbody MyProjectile;
         MyProjectile = Instantiate(stonePrefab, transform.position, transform.rotation) as Rigidbody;
         MyProjectile.rigidbody.AddForce(new Vector3(-2000,0,0)); 
 
     }
 }
 
 
 
 I am not sure how to approach this, help is much appreciated!